sreejith sisupalan

Student, KOZHIKODE, India

Sreethumba ’s Questions

how can i introduce carbon dioxide into a vertical pbr of size diameter 1.75 ft and height of 3 ft , i mean in what form and i have read about spargers and all in connection with this. my doubt is regarding introduction of carbon di oxide and oxygen removal at minimal cost..please help.

Dissolved CO2 consumption into culture medium by growing microalgae it's directly related with cell growth rate of microalgae. So that you must determine maximun growth cell rate to deduce maximun disolved CO2 consumption. About oxygen removal, if the PBR is an open bioreactor then you can use one semipermeable membrane to removal this. But PBR is an closed bioreactor you must use one oxygen absorption column to oxygen disposal.

have got an assignment to prepare biodiesel fromwaste cooking oil for my mini project, is there any methods for improving its properties ie how to reduce the carbon residue and improve other properties .can nano particles or addition of any similar chemicals can serve my purpose especially to reduce the carbon residue?

How much quantity is required in obtaining atleast half a litre of algal oil and what are the strains of algae that i should search for in ,my part of world Kerala.. and anybody can help me identify the strains that are actually useful in my region?

hello sree,
this is a very common question come in everyone's mind..
let me clarify little...
i give you one example,
lets consider botryococcus strain of algae which has 50% of oil content.
if you want to get half litre oil then you will need almost 1 to 1.1 Kg of botryococcus biomass.
note that this is just an example..
you may find botryococcus oil content ranging from 30-70%
And there are different algal species which have different oil contents.
there is lot of literature available on web for identification, but for that you must have something in your hand to start with. get it first.
Best of luck.

How to extract algal oil at low cost ? mechanical extraction or chemical extraction? if only i can produce a little bit of oil for testing purpose then only i can raise funds from my instituition so to start with whatever limited funds that i could adjust what is the way to go about? chemical extraction ?

Sure, all you need to so is Google nano farming algae. The company is called Catilin and they also haveca good catalyst for converting the oil into B100 with a coproduct of high grade glycol which I found can be used as feed for the algae when sun light isn't available. It the glycol can also be processed into a butanol additive when fermented by Clostrudium. There are other methods to "milking" the oil out of algae just as there are methods for milking sugars that can be made into butanol, ethanol or any other line of alcohol. Algenol has a method for milking ethanol straight out of the algae as well. I'm wondering what the methods are for milking proteins for continuous food harvesting because to be honest, the only way I see algae as being marketable is through these methods for live continuous harvesting.